Hello I just got my blackbox yesterday. Did all the wiring and now struggling with VFD control. I can turn it on and off from Control and also can choose RPM. Problem is with gcodes, spindle turns on with M4 and turns off with M3. It should turn on with M3 and turn off with M5. M5 at this point lowers rpm to 8000 and stays there. Jumper is on Dir/VFD and using relay to cut off spindle. Tried putting jumper M3/M5 and M8/M9 also. not working at all. Blackbox manual doesnt say anything about that DIR/VFD jumper. Maybe someone can help me with this little issue. Thanks,
I don't see any dir/relay jumpers in the circuit diagram, you must have a new version. @Peter please put up the new versions and make it clear how to tell which board you have. Let's consider how Gcode normally works... M3 turns on the PWM speed signal and sets the DIR pin off indicating clockwise rotation M4 turns the PWM signal on and sets the DIR pin ON indicating anticlockwise rotation. M8 turns the coolant pin on M9 turns the coolant pin off. I don't see any way to effectively use direction as an enable unless you also provide custom Gcode via editing your post processor or hand editing every Gcode file (prone to errors). turn on at 4000 rpm M4 S4000 ; set dir pin on to enable drive, and set PWM at the same time turn off M3 S0 ; puts dir pin off M5 ; turns PWM signal off too I believe a better solution is to connect the enable relay to the coolant pin since most postprocessors can enable coolant easily by default. turn on M8 ; activate enable relay M3 S4000 .... speed may be change during program by more M3 Sxxxx commands turn off M5 ; disable pwm M9 ; disable enable relay
Yes it seems that I have new version blackbox. It would be nice to see some documentation updates on blackbox wiki. But for now I edited my fusion360 postprocessor to shoot out changed gcodes. M4 to start the spindle and M3 to cut off. It seems easier to do it thatway rather than using coolant codes and deal with double M codes for switching. Thanks
It's so new I didn't even know it was shipping yet (; The documentation for the VFD specific stuff is always low priority because we prefer you use Routers, much simpler. Most of the VFD compatibility exists for advanced users. Will add documentation, but see below, need a test case first All depends how you have it wired / VFD configured... 0-10v output scales according to the S-Word, M3/M4 changes the behaviour of the DIR pin only. If you have the VFD wired correctly, 0-10v with M3/M5 will work fine The new boards allow you to hook up the relay directly to the DIR pin - for some VFDs that need a to close FOR to ACM? (I think, don't have the specifics at hand) - it exists as an option now, but no documentation as those VFDs are scarce, For now use as shown in the forum link at the bottom of the 0-10v page on docs. Next time someone comes around with one that needs the FOR wiring we'll use that opportunity to work it out and get pictures etc. Something todo with Minimum frequency setting on the VFD, refer forum linked in docs.openbuilds.com > 0-10v
